Function triggerBuild

ci/src/build-handler/index.mjs:110–233

* `startBuild` returns a Build object * https://docs.aws.amazon.com/codebuild/latest/APIReference/API_Build.html * @param {string} ciContentsResponse - The response from the GitHub repository contents API for buildspec.yml * @param {GitHubPullRequestWebhookPayload|GitHubPushWebhookPayload} event

(ciContentsResponse, event)

 * @param {GitHubPullRequestWebhookPayload|GitHubPushWebhookPayload} event
 */
async function triggerBuild(ciContentsResponse, event) {
  console.log('Starting CodeBuild run');

  // ciContentsResponse is the JSON body response from a Contents API request
  // to GitHub for a buildspec.yml file in the project that triggered the
  // webhook event. It contains a base 64 encoded string which is the contents
  // of that file.
  /** @type {ReposGetContentResponseData} */
  const ghData = JSON.parse(ciContentsResponse);
  // TODO Not sure why it thinks ghData.content doesn't exist
  // @ts-ignore
  const buildspec = Buffer.from(ghData.content, 'base64').toString('utf8');

  // Only trigger builds for repositories where the buildspec appears to be
  // be designed for use with CI. Look for an `PRX_` string as a test.
  if (!buildspec.includes('PRX_')) {
    console.log('Skipping unsupported buildspec.yml');
    return;
  }

  const commitRef = eventIsPullRequest(event)
    ? event.pull_request.head.sha
    : event.after;

  const environmentVariables = [
    {
      name: 'PRX_REPO',
      value: event.repository.full_name, // e.g. PRX/MyApp
    },
    {
      name: 'PRX_COMMIT',
      value: commitRef,
    },
  ];

  if (eventIsPullRequest(event)) {
    // Pull requests are test-only builds. The pull request number is not
    // used by the build process, but needs to be passed along to the
    // callback for setting the GitHub status.

    event.repository.clone_url;

    const num = event.pull_request.number;
    const title = event.pull_request.title;
    const branch = event.pull_request.head.ref;
    const baseBranch = event.pull_request.base.ref;
    const author = event.pull_request.user.login;
    const action = event.action;
    environmentVariables.push({ name: 'PRX_GITHUB_PR', value: `${num}` });
    environmentVariables.push({ name: 'PRX_GITHUB_PR_TITLE', value: title });
    environmentVariables.push({
      name: 'PRX_GITHUB_PR_BASE_BRANCH',
      value: baseBranch,
    });
    environmentVariables.push({ name: 'PRX_GITHUB_PR_AUTHOR', value: author });
    environmentVariables.push({ name: 'PRX_GITHUB_ACTION', value: action });
    environmentVariables.push({ name: 'PRX_BRANCH', value: branch });